Abstract
Hydrogen sorption abilities of Pt-B 2 O 3 /Al 2 O 3 systems with different molar ratio of oxides obtained by sol-gel method were examined. Platinum was introduced by surface impregnation. Main goal of the research was to check an influence of metallic component (platinum) on sorption properties of B 2 O 3 /Al 2 O 3 binary oxides. The oxide systems were characterized using XRD and TEM. Hydrogen adsorption was tested in the volumetric system and TPD measurements were taken. Results show that the amount of adsorbed hydrogen depends not only on the amount of platinum in the system but also on the type of oxide support and mainly on the content of boria.
Highlights
The problem of safe and effective storage of hydrogen is one of the major technological barriers currently inhibiting the widespread adoption of hydrogen as an energy carrier
A particular attention was paid to keep up to the standards developed for the measurements of this type to eliminate errors that could lead to wrong interpretation [18]. In this method the amount of adsorption is inferred from pressure measurements that are performed on the gas before and after the adsorption takes place, as we described in [7]
With the increase in the participation of component B2O3 can be seen an increase in the amorphous structure of the system
Summary
The problem of safe and effective storage of hydrogen is one of the major technological barriers currently inhibiting the widespread adoption of hydrogen as an energy carrier. Practical problems with the storage of hydrogen in both gaseous and liquid form appear to make solid state storage the most attractive proposed solution. Due to this fact the search for potential solid state hydrogen storage media is attracting a significant amount of research interest from both academia and industry. Various types of materials have been proposed and are currently being investigated, including microporous materials that can store physisorbed molecular hydrogen at low temperatures [1, 2], MOF [3] and carbons [4, 5]. Jhi et al [6] considering the value of desorption enthalpy, made a suggestion to use B2O3, HBO2 and H3BO3 as hydrogen storage materials
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